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有丝分裂是细胞分裂的主要形式，就单个细胞来说：一个细胞的有丝分裂都具有显著的连续性和周期性；如果就个体的整个或部分（也就是若干个细胞）来说，有一个明显的特点：即具有细胞分裂高峰期，例如：经实验证明，洋葱很尖高峰期是早上9：00～9：40；大蒜的高峰期是早上9：55
Mitosis is the main form of cell division. In the case of a single cell: the mitosis of a cell has significant continuity and periodicity; if there is an obvious feature in terms of the whole or part of an individual (that is, several cells) : It has a peak period of cell division. For example, it has been experimentally proven that onion peaks at 9:00 to 9:40 in the morning; garlic peaks at 9:55 in the morning.